125551229 has 2 divisors, whose sum is σ = 125551230. Its totient is φ = 125551228.

The previous prime is 125551211. The next prime is 125551243. The reversal of 125551229 is 922155521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125395204 + 156025 = 11198^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 125551229 - 2⁸ = 125550973 is a prime.

It is a super-2 number, since 2×125551229² = 31526222206820882, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 125551195 and 125551204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125554229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62775614 + 62775615.

It is an arithmetic number, because the mean of its divisors is an integer number (62775615).

Almost surely, 2^125551229 is an apocalyptic number.

It is an amenable number.

125551229 is a deficient number, since it is larger than the sum of its proper divisors (1).

125551229 is an equidigital number, since it uses as much as digits as its factorization.

125551229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 32.

The square root of 125551229 is about 11204.9644800865. The cubic root of 125551229 is about 500.7338942714.

The spelling of 125551229 in words is "one hundred twenty-five million, five hundred fifty-one thousand, two hundred twenty-nine".